A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 7035-00-703-3535
NSN 5945-01-237-8671
NSN 6620-01-534-0898
NSN 7035-00-349-8571
NSN 6620-01-242-9247
NSN 6320-00-110-8005
NSN 5905-01-563-2247
NSN 4140-01-351-2586
NSN 6645-01-414-4941
NSN 6135-01-095-5921
NSN 6145-00-076-9324
NSN 6240-00-005-7302